Signal system



March 21, 1939. 'r. A. J. HAYES S IGNAL SYSTEM 8 Sheets-Sheet 1 OriginalFiled July 22, 1932 8 Sheets-Sheet 2 7 vezzhz' SIGNAL SYSTEM T. A. J.HAYES Original Filed July 22, 1952 March 21, 1939.

March 21, 1939. T, A. J. HAYES SIGNAL SYSTEM Original Filed July 22,1952 8 Sheets-Sheet 5 27:2 060%? flttoz ugg March ZI, 1939.- T. A J.HAYES SIGNAL SYSTEM Original Filed July 22, 1932 8 Sheets-Sheet 4 March21, 1939.. T, A HAYES 2,151,272

SIGNAL SYSTEM Original Filed July 22, 1932 8 Sheets-Sheet 5 g 1% 1o.-./2v

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T. A. J. HAYES SIGNAL SYSTEM Original Filed July 22, 1932 8 Sheets-Sheet6 To abo V8 48 Volts .v 72 we: Whiz March 21, H Y

S IGNAL SYSTEM Original Filed July 22, 1932 8 Sheets- Sheet 8 48 VO/fs26 Patented Mar. 21, 1939 UNITED STATES PATENT OFFICE SIGNAL S YSTEMRefiled for abandoned application Serial No.

624,028, July 22, 1932. This application November 23, 1938, Serial No.242,108

22 Claims.

The present invention relates to signal systems :vhich are used by thepolice in urban communiies. 1

This application is a refile for abandoned application Ser. No. 624,028,filed July 22, 1932.

Heretofore these systems provided means whereby the patrolmen couldcommunicate with the station house from one of the patrol boxes on thestreet either to call the wagon to the box pulled or to register a dutycall at the station house, but no means was provided for signalling thepatrolmen on the street from the station house or for a citizen on thestreet to call to his assistance help either from the station house orfrom the patrolmen on duty on the streets.

The principal object of the present invention is to produce a signalsystem by which the station house may check readily the activities ofthe patrolmen on duty on the streets, by which the station house inaymarshal quickly and efficiently the patrolmen in the streets, on foot,in automobiles and on motorcycles, by which the station house maydistribute promptly information and orders to the patrolmen on duty inthe streets, by which a citizen in the street may summon assistance bothfrom the station house and from the patrolmen on duty in the streets, bywhich a patrolman on duty may summon aid in the case of need, and bywhich the calls both from the patrolmen and the citizens may be recordedaccurately at the station house.

To the accomplishment of this object, and such others as may appearhereinafter, the various features of the present invention consist incertain constructions, combinations and arrangement of parts, orcircuits hereinafter described, and then set forth broadly and in detailin the appended claims, possessing advantages readily apparent to thoseskilled in the art.

The various features of the present invention will be understood readilyfrom an inspection of the accompanying drawings, illustrating the bestform of the inventionv at present devised, in which:

Figure 1 is a view in front elevation of the signal desk at the stationhouse, or division headquarters;

Figure 2 is a view in left side elevation of the signal desk;

Figure 3 is a detail view in front elevation of the patrol box, theouter door of which is closed and locked;

Figure 4 is a view in right side elevation of the patrol box showing thesignal light lantern carried thereby;

. garage circuit.

Figure 5 is a detail view in rear elevation of the officer and citizensalarm code wheels and the associated wiring diagrams;

Figure 6 is a detail view in front elevation of the patrol box, theouter door of which is open;

Figure 7 is a detail view in sectional elevation on the line Fig. 3;

Figure 8 is a detail view in sectional elevation on the line 8-8, Fig.6;

Figure 9 is a diagrammatic view of the patrol box circuits;

Figure 10 is a diagrammatic view of the register circuit;

Figure 11 is a diagrammatic view of one of the patrol circuits;

Figure 12 is a diagrammatic view of one of the citizen's alarm andflashing circuits, and

Figure 13 is a diagrammatic view of the test and garage circuits.

The illustrated embodiment of the present invention provided a patrolbox system with patrol boxes located conveniently on the streets andconnected by electric circuits to the police station house throughequipment which,

1. Enables any police ofiicer on the streets to communicate at any timeby recorded signal and by telephone with police stations and commandingoflicers.

2. Enables a police oflicer at any patrol box to cause visual signals tobe displayed at the patrol boxes in the neighborhood and in the divisionpolice station, which signals call other police oflicers to hisparticular location and to his aid.

3. Enables any civilian by pulling a hook at a patrol box to display thevisual signals on the patrol boxes in his neighborhood and to operateboth a visual and an audible signal in the division police station, tocall the police to his location and to his aid, and

4. Enables the ofiicer in charge at a police station to display thevisual signals at the patrol boxes in a particular neighborhood, whichsig-- nals call the patrol officers to'any nearby box to receiveinstructions by means of the telephone service included in the patrolbox system.

The signal desk 14 (Figs. 1 and 2) is located at the station house, ordivision headquarters, and comprises an ordinary oflice desk upon whichis mounted a cabinet I 5 carrying operating devices for four patrolcircuits, four citizen's alarm and flashing circuits, one test circuit,and one However, since all of the patrol, citlzens alarm and flashingcircuits are identical, respectively, reference hereinafter will be madeto one only of the duplicate circuits.

In the upper left hand compartment of the cabinet I5 is the printingregister l6 and the time stamp H. The register and stamp operate upon apaper tape two inches wide which is drawn from a reel I8, through theregister and stamp, by a reel |9 which is driven automatically by anelectric motor 2|). After leaving the time stamp the tape passes througha tube 2| which turns the tape so as to expose its printed and stampedface to the view ofthe signal desk attendant.

The signal desk is provided with a telephone set comprising a receiver22, a transmitter 23, two bells 24 and 25, a volt meter 26, a testswitch 21, a bull's eye 28 for each of the four citizen's alarm andflashing circuits, a bulls eye 29 for the test circuit, a switch 30 ineach of the flashing circuits for starting the generator-set, a switch3| for starting the generator-set for the purpose of testing, two keys32 and 33 for each of the patrol circuits, two keys 34 and 35 for thegarage circuit, a pilot lamp 36 for each of the patrol circuits, a pilotlamp 31 for the garage circuit, and a clock 38.

The patrol box 39 (Figs. 3, 4, and 6) is mounted on a standard 40 andcomprises an outer door 4| normally closed and locked, but adapted to beopened by the patrolman to expose an inner door 42 upon the front andrear faces of which are mounted the devices for operating the mainpatrol box and auxiliary circuits.

It will be understood that each patrol circuit comprises a plurality ofpatrol boxes each numbered differently, the one illustrated in Fig. 3being numbered 32.

Suspended from the end of a bent pipe 43 (Fig. 4), supported from thepatrol box 39, is a lantern 44 designed to give a signal in the daytimevisible at a distance of fifteen hundred feet. To this end a Mazda lampwith long filaments (not shown) is enclosed in a Fresnel lens 45 all theprisms of which are visible. The hood 46 of the lantern is designed toshed the rays of the sun without obstructing the signal which passes,from the center of the lens 45 in a beam two inches wide, in alldirections. The lens has a dark ruby color-which may be plainly seen indaylight and which imparts a brilliant signal at night.

The outer face of the inner door 42 of the patrol box carries a pointer41 (Fig. 6) secured to a rockshaft 48 which carries the officer's codewheel 49 (Fig. 5). The outer face of the inner door 42 carries arock-shaft 50 (Figs. 5, 6, and 7) upon which is mounted the citizen'salarm code wheel 5| (Fig. 5). The front end of the rock-shaft 50 carriesan operating arm 52 (Figs. 3 and 7) which, as shown in Fig. 3, may beoperated when the outer door is closed and locked. The inner door 42 isprovided with a plunger switch 53 which is actuated by a lug 54 mountedon the inner face of the outer door 4|. The inner door 42 carries also atelephone transmitter 55 (Fig. 6) and a 70 ohm telephone receiver 56.

The telephone receiver 56 permits the patrolman to receive while bothhis hands are free to write an order in his book. To this end thereceiver is mounted on one end of an arm. 51 the other end of which isprovided with a cup 58 forming one-half of a casing which houses aswitch. The rim of the cup 58 engages freely the rim of a cup 59 securedto the inner door 42 and forming the other half of the casing for theswitch. The switch comprises a pin 60 (Fig. 8)

projecting laterally from the cup 59 and a pair of contacts 6| carriedfrom the cup 58. Normally the pin 60 separates the contacts 6|. When theofiicer desires to receive he swings the receiver 56 outwardly away fromthe inner door 42 thus rotating the cup 58 on the cup 59 and removingthe pin 69 from between the spring arms for the contacts 6| which engageto close the circuit. In order that the receiver 56 may be retained inthe position to which it has been swung to permit the oflicer to useboth hands in-recording orders, the center of the cup 58 looselyreceives a threaded rod. 62 projecting laterally from the center of thecup 59. The rims of the cups 58 and 59 are held in frictional engagementby a spring washer 63 (Fig. 6) mounted on the rod 62 and interposedbetween the cup 58 and a thumb nut 64 threaded on the rod 62.

The patrol box is shown in Figure 9. It is designed to provide means fortelephone conversation between the patrolman and his station house, orsimply registering the box number at the station house for a duty call,and for a citizens alarm whereby a citizen may call aid to a particularbox and register the box number at the station house. In addition to thelantern 44, the telephone transmitter 55, the telephone receiver 56, thetelephone switch, the plunger switch 53 and the code wheels 49 and 5|,the elements contained in the patrol circuit are a 1250 ohm resistance65, in Fig. 9 and a two microfarad condenser 66.

When the outer door 4| to the patrol box 39 is opened the plunger switch53 closes and connects the resistor 65 across the lines 61 and 68 (48volts) and causes one of the .pilot lamps 36 (Fig. 1) to light at thesignal desk. When the patrolman swings the receiver 56 outwardly thecircuit is broken at A (Fig. 9), but is reestablished at 13, thusputting the transmitter 55 in the telephone circuit. When the receiveris on the hook there is a complete circuit and the signal deskattendant, as will be described more in detail hereafter, may sendalternating current over the circuit to howl in the receiver if hewishes to recall the patrolman after he has replaced the receiver backon the hook.

The ofiicers alarm circuit operates over lines 61 and 63 and is set inoperation by moving the pointer 41 (Fig. 6) either to the position T orthe position W. Movement of the pointer 41 to either position causes aspring to be wound and the code wheel 49 to rotate. 41 is moved to the Wposition (Fig. 6) the spring is wound tight. When the pointer 41 ismoved to the T position (Fig. 6) the spring is only partially wound.Thus, movement of the pointer to the W position imparts a greaterrotative movement to the code wheel 49 than when the pointer is moved tothe T position.

When the pointer 41 is moved to the T position the code wheel 49operates a spring arm 69 (Fig. 5) to make and break the contacts 10.When the pointer 41 is moved to the W position (Fig. 6) the code wheel49 operates a spring arm 1| to make and break the contacts 12. By meansof the contacts or 12 the circuit is made and broken at 13 (Fig. 9) thussending a series of pulses which correspond to the box number and areregistered at the station house. The code calls a wagon to the boxpulled or merely indicates the location from which the patrolman ismaking his routine report, according to whether the pointer 41 is movedto the W or the T position (Fig. 6).

The citizens alarm circuit is set in motion over the lines l4, l5 and 16(Figs. 9 and 12), and the signals to flash the lanterns are sent outover the lines 11 and 18. When the citizen pulls down When the pointerthe citizens alarm arm 52 (Fig. 6) he winds up a spring which inunwinding operates a movement train and rotates the code wheel 5|. Thetrain, through the dog 19 (Fig. 5), brings together the contacts 80. Thecode wheel 5| operates a spring arm 8| to make and break: the contacts82. Movement of the arm 52 from the normal position closes the circuitat the contacts 80 (Figs. 5 and. 9) causing a relay to be described, atthe station house to be operated over the lines 15 and 16, by a 24-voltbattery. This relay in turn operates an automatic line switch whichcloses a 110-volt circuit and starts a motor-generator set. The codewheel 5| is so timed that when the motorgenerator set builds up, thecontacts 82 (Figs. 5 and 9) cause another relay to operate over thelines 14, 16. This relay connects the generator-set across the lanterncircuit lines 11 and 18 and code isflashed out at all the patrol boxeson the circuit, under control of the code wheel 5| at the box pulled.The register and time stamp are operated, making a record on the tape ofthe box number pulled and the time thereof at the station house.

Describing the signal system more specifically, when the door M to thepatrol box is opened the plunger switch 53 closes and connects thel250-ohm resistance 65 (Fig. 9) and the 70-ohm receiver 56 across thelines 61 and 68. This causes the following circuit to be closed: fromthe negative side of a 48-volt battery 83 (Fig. 11), through the upperwinding of relay 84, the lower winding of the relay 85, over the line61, through the patrol box circuit (Fig. 9) back over the line 68, theupper winding of relay 85, the lower Winding of relay 84 to the positiveterminal of the battery 83. The resistance 65 (Fig. 9) placed across thelines 61 and 68 at the patrol box allows sufficient current to flow andoperate the relay 85 but the relay 84 does not operate. When the relay85 operates it closes the following circuits; from the negative line 83of a 24-volt battery 86 through the left contact 81 of the relay 85, apilot lamp 36 (Figs. 1 and 11), lower right break contact 88 of the key33, to the positive terminal of the battery 86, and from the negativeline 83 through the right contact 88 of the relay 85, the lower leftbreak contact 90 of the key 33, the buzzer 9|, to the positive terminalof the battery 86. The pilot lamp 36 now lights and the buzzer 9|operates, thus notifying the signal desk attendant that the patrol boxhas been opened.

The attendant now throws the key 33 to a talking position whichextinguishes the pilot lamp 36, cuts off the buzzer 9| and when theattendant lifts the receiver 22 of his telephone set from the hook, thesignal desk set is connected to the telephone set at the patrol box. Thecalling officer has, by this time, removed his receiver. The circuitwill be closed as follows: from the positive terminal of battery 86through the make contact 92 of the key 33, primary of an induction coil93, the transmitter 23, the retardation coil 94 to the negative line 83;also from the patrol box over the line 68, through a condenser 95,through the lower left make contacts 96 of the key 33, a secondary ofthe induction coil 93, the attendants receiver 22, the lower right makecontacts 91 of the key 33, a condenser 98, the line 61 to the patrolbox.

When the receivers 22 and 56 are placed on their hooks and the talkingkey 33 restored to normal,

the pilot light 36 relights and the buzzer 9| ophut are restored tonormal when the door .1: 4| oi the patrol box is closed. If the signaldesk attendant desires to recall the calling patrolman before the door4| has been closed, he throws the key 33 to the ringing position andcloses the following circuit; negative line 83 through the middle madecontact 90 of the relay 85, make contacts I of the key 33, magnetwindings IOI and the primary of the induction coil I02 to the positiveterminal of the battery 86. The armature of the magnet IOI vibrates,inducing alternating current in the secondary winding of the inductioncoil I02. This alternating current is impressed on lines 61 and 68through the make contacts I 80 of the key 33, which is in the ringingposition, and the two microfarad condensers 95 and 98. This sets up atone or howl in the receiver 56 at the patrol box, which notifies thepatrolman that the signal desk attendant desires to speak to him again.

In addition to talking to division headquarters the patrolman can call apatrol wagon or make his routine report by moving the pointer 41 in thepatrol box to the proper position. In either case, movement of thepointer winds the ofiicers code movement which operates the code wheel49 and sends code out by repeated short-circuiting of the lines 61 and68.

When the contacts 12 (Fig. close the following circuit is closed; fromthe negative terminal of the battery 83 through the upper winding of therelay 84 (Fig. 11), the lower winding of relay 85, over line 61, throughthe contacts 12 of the code movement, back over the line 68, upperwinding of relay 85, lower winding of relay 84 to the positive terminalof the battery 83. The closing of the contacts 12 at the patrol box cutsout the 1250-ohm resistance 65 and the resistance of the '70-ohmreceiver 56 causing the current to increase (over the value flowing whenthe box was opened and the relay 85 operated) and relay 84 operates.This closes a circuit (for each impulse sent out by the code wheel);from minus l2-volts (Figs. and 11) through the make contacts of relay84, break contacts of key 32 to line I03 (Fig. 10) of the register.

As explained above, when the contacts 12 are closed at the oilicers codemovement, the relay 84 operates and connects minus 12-volts to terminalI03 of the register. This circuit continues through the coil I04 (Fig.10), the release relay I05 to the frame of the register which isconnected to plus l2-volts. The completion of this circuit causes thefollowing to happen simultaneously;

1. The armature of coil I04 pulls up and causes the paper tape to bepushed against the printing wheel I06.

2. The release relay I05 operates and moves an arm which releases thecontact wheel I01 and the wheel I08 which are connected to the sameshaft and driven by a spring mechanism. Also the creeper wheel I09 iscaused to mesh with the wheel I08.

3. The contact wheel I01 is so timed as to make one complete revolutionduring the period that code is sent out from the patrol box code wheel49. During this revolution the contact spring H0 is closed and a circuitis established from plus I2-volts (which is already connected to theframe) through the frame, the contact wheel I01, the contact spring H0,the take-up motor relay III to minus 12-volts. This relay operates andstarts the take-up reel motor H2 which moves the paper tape through theprinting mechanism. Also, during one complete revolution of the contactwheel I01, the time stamp 'the contact wheel I01, the contact spring H3,

the time stamp coil H4 to minus 12 volts.

4. For routine reporting only short impulses come in over the lines 61and 88. However, the citizens alarm and wagon codes are long impulsesand operate a gong H5 (Fig. 10) in addition to registering on the papertape. For long impulses the creeper wheel I09 meshes with the wheel I08long enough to cause the contact H5 'to close and tap the gong H5 oncefor each long impulse. On the short impulses, the creeper wheel I09meshes with the wheel I08 but not long.

enough to close the contact H6.

After one complete revolution of the contact wheel IN the circuits arebroken and the register restored to normal. Wagon calls and citizenalarm codes are repeated three times during one revolution of thecontact wheel.

When the citizens alarm arm 52 is pulled at the patrol box, either bythe patrolman or 'by a civilian, the citizens code wheel 5I is set inmotion and the contacts 80 (Fig. 9) close and remain closed thusshort-circuiting lines I5 and 18 and closing the following circuit; fromminus 24 volts (Fig. 12) over line I6, through the contacts 80 at thepatrol box, back over line I5, through the motor-starting relay H8(,Fig. 12) to plus 24 volts. The motor-starting relay H8 closes acircuit to the line starter H9 (Fig. 12) which operates and starts themotor-generator set comprising the motor I20 and the generator I2I.timed that when the generator has built up to normal voltage contacts 82(Fig. 9) of the code wheel open and close according to the code of thatparticular box and complete the following circuit for each impulse: fromminus'24 volts (Fig. 12) over line I6 to the patrol box, throughcontacts 82, back over line I4, through the citizens flash relay I22 toplus 24 volts. The citizens flash relay I22 operates (each time thecontacts 82 of the code wheel close) and completes the followingcircuit: from the positive I25-volt terminal I23 of the generator I2Ithrough the feeder fuse I24, over the line I8, through the signallights- 44 on all the patrol boxes in the circuit in operation and backover the line H,

through the contacts I25 of the citizen's flash relay I22, the otherfeeder fuse I26 to the negative 125-volt terminal I2'I of the generatorI2I. As shown in Fig. 5, the bull's eye 28 is connected across the lines'II and'18 so that when the circuit over these lines is closed, thebulls eye is lighted.

The citizen's print relay I28 is in parallel with the citizens flashrelay I22 and operates each time the citizen's flash relay operates.When the citizens print relay I26 operates, the lines 61 and 68 areshort-circuited and the relays 84 and 85 operate. This connects theminus 12 volts to the register circuit which operates as explained inthe description of the register circuit.

The movement train which rotates the code wheel 5| runs for thirty-fiveseconds when the The citizen's code alarm wheel 5I is so operates thecontacts 82 which operates the citizens flash relay I 22 to flash thebox number pulled to every patrol box on the circuit, to print the boxnumber on the tape in the station house, to stamp the time on the tape,to flash the bullseye 28 and to strike the number of, the box pulled onthe gong H5. The primary purpose of the citizen's alarm is to summonhelp to a citizen on the street from the station house, or to apatrolman so engaged with an unruly prisoner as to make the opening ofthe police box diflicult or impossible. The second purpose of thecitizens alarm is to signal from the station house the patrolmen on thestreet, principally those in automobiles and on motorcycles, who goimmediately to the box pulled by the citizen. The patrolmen on foot arenot required to respond to the box pulled but are obliged to go to thenearest box for orders from the station house. At no time is there morethan 24 volts passing through the contacts or 82 at the patrol box. Thefirst patrolman to arrive .at the box pulled by the citizen is requiredto open the box and move the pointer 41 to the T position (Fig. 6), thusrecording on the tape in the station house his time of arrival inresponse to the citizen's signal.

If the station house desires to communicate with a patrolman on thestreet, the signal desk attendant closes one of the switches 30 (Figs. 1and 12) which causes the motor-generator set to start up and send aflashing signal to all boxes on a particular circuit. When the signaldesk attendant operates the switch 30 the circuit to the line starter H9(Fig. 12) is closed, the line starter operates, starts themotor-generator set and the driving motor I29 for the rotating drumflasher I30. When the generator I2I has built up to voltage,intermittent flashes will be sent out over the following circuit: fromthe negative terminal I2'I through the flasher I30, the switch 30 overthe line 11, through the signal lights 44 at the patrol boxes, back overthe line I8 to the positive terminal I23 of the generator I2I. Allpatrolmen, in response to the flashing signal, call divisionheadquarters from the nearest patrol box telephone. As indicated in Fig.12 the contacts of the flasher I30 are staggered so that only thelanterns 44 in one circuit are lighted at one time. When the signal deskattendant depresses the key 35 (Fig. 1) to the ringing position thefollowing circuit is closed: from plus 12 volts (Fig. 13) through thekey 35, the signal bell I3I,

the garage, through the receiver I32 and the transmitter I35, back overthe line to the signal desk and through the upper winding of the relayI34 to plus 48 volts.

The relay I34 operates and closes the following circuits: from minus 12volts through the left contact I38 of the relay I34, the pilot lamp 31,the break contact I3'I of the key 35 to plus 24 volts; also from minus12 volts through the right contactof relay I34, the break contact of thekey 35, the buzzer 9| (Fig. 11) to the positive terminal of the battery86 (Fig. 11) The pilot lamp 31 lights and the buzzer 9| operates. Theattendant now depresses the key 35 to talking position which connectshis telephone set with that in the garage.

To test the generator voltage, the signal desk attendant closes theswitch 3| (Figs. 1 and 12) which starts the motor-generator set throughthe lines I38 and I39 which connect with the main generator feedersthrough the fuses I40 and MI. He then moves the test key 21 (Figs. 1 and13) to the left closing the lower make contacts I42 which completes thefollowing circuit: from the negative terminal of the voltmeter 26through the lower make contacts I42 of the test key, line I43 (Figs. 12and 13) to the negative main generator feeder (Fig. 12), from thepositive main generator feeder, line I44, make contacts I42 to thepositive terminal of the voltmeter 26.

To test the 48 Volt battery 83 of the patrol circuit, the attendantoperates the keys 32 and 34 (Figs. 11 and 13) closing the lower makecontacts thereof, and also moves the test key 21 to the right (Fig. 1)closing the upper make contacts I45 (Fig. 13). The following circuit ismade: from the positive terminal of the battery 83 (Fig. 11) through thelower left make contact of the key 32 (Fig. 11), the lower right makecontact of key 34 (Fig. 13) to the upper left make contacts of the testkey 21 to the positive terminal of the voltmeter 26, from the negativetenninal of the voltmeter 26, through the upper right make contacts ofthe test key 21, the lower left make contact of the key 34, the upperleft break contact of the key 32 to the negative terminal of the battery83.

To test the 48 volt garage circuit battery I33 (Fig. 13), the deskattendant operates the keys 32 and 34 closing the upper make contactsthereof. The following circuit is completed: from the negative terminalof the battery I33, through the upper left make contacts of the key 34,the lower left break contacts of the key 32, the upper right makecontacts of the test key 21, to the negative terminal of the voltmeter26, from the positive terminal of the voltmeter 26, through the upperleft make contacts of the test key 21 to the lower right break contactsof the key 32, the upper right make contact of the key 34, to thepositive terminal of the battery I33.

In the systems heretofore devised for police work it was characteristicto require a patrolman on uuty in the streets to send in to the stationhouse from a patrol box a duty call at a predetermined time. Thisrequirement does not tend to promote emciency. The mere fact that at thepredetermined time the duty call came in from the proper patrol box doesnot prove-that it was sent in by the patrolman, for the duty call mayhave been re'dstered at the predetermined time and from the proper boxby some friend or by another patrolman on an adjoining route. Moreover,the fact that the patrolman must be at a certain box at a certain timeis known to the criminals as well as to the police, and therefore thesaid requirement is an advantage to the criminal in that he may wait inhiding until the patrolman has pulled the nearest box and gone on to thenext box on his route when the law-breaker may pursue his criminalactivity with knowledge of the fact that the patrolman will not returnto the box pulled for at least an hour. Furthermore, the saidrequirement does not afford the patrolman an opportunity to performintelligent work as a representative of the law in the streets, reducinghim, rather to the status of a watchman with no chance to show anyinitiative or resourcefulness.

By the illustrated embodiment of the present invention predeterminedduty calls are abolished. All the patrolman is required to do withrespect to his duty calls is to call the station house every fortyminutes. This means that the patrolman may report at nine oclock andagain at ninefifteen if he has any reason to do so. For instance, if thepatrolman sees suspicious persons on the street he can devote fortyminutes from the nine-fifteen call in watching them and is not compelledto be at any particular patrol box at a predetermined time. If thestation house desires to check the activities of the patrolmen on dutyin the streets the signal desk attendant may flash the lanterns on thepatrol boxes of the patrolmans route and when the patrolman responds tothe signal he may be asked to send in a duty call. Then, if thepatrolman is at the same box he reported from at nine-fifteen hissuperior officer may ask him for an explanation. By this system thestation house is able to know just where each patrolman on duty in thestreets should be. Each patrol division is so arranged that thedistances between patrol boxes on the chart in front of the sergeant aresuch that, allowing the patrolmen time to patrol side streets and, atnight, to try shop doors, the sergeant may follow, by means of thesignal lights and the patrolmens responses thereto, the patrolmen aroundthe various routes of the division.

Nothing herein explained is to be interpreted as limiting the inventionin the scope of its application to use in connection with the particularapparatus or the particular mode of operation or both selected forpurposes of illustration and explanation. While the particulars ofconstruction herein set forth are well suited to one mechanical form, orone electrical form of the invention, it is not limited to these detailsof construction, nor to the conjoint use of all its features nor is itto be understood that these particulars are essential since they may bevariously modified within the skill of the artisan without departingfrom the true scope of the actual invention, characterizing features ofwhich are set forth in the following claims by the intentional use ofgeneric terms and expressions inclusive of various modifications.

What is claimed as new and desired to be secured by Letters Patent ofthe United States is as follows:

1. In a signal system, the combination with a patrol box adapted to beopened and closed and provided with a telephone set, a station houseprovided with a telephone set, a normally open circuit connecting thebox and the house, and a switch operated by the opening of the box to Iclose the circuit and place the telephone sets therein, of meansactuated from the house for inducing alternating current in the circuitto make a howl in the box telephone receiver when the box is open.

2. In a signal system, the combination with a patrol box provided with avisual signal, a station house, and citizens alarm and box visual signal4. In a signal system, the combination with a numbered patrol boxadapted to be opened and closed and provided with a visual signal, astation house provided with a source of electrical energy, and a relayfor operating the visual signal, of means at the box operable when thebox is closed for connecting the source of electrical energy with thesignal operating relay to actuate it and for causing the signal toindicate the number of the box.

5. In a signal system, the combination with a plurality of patrol boxeseach numbered differently and each provided with a visual signal, astation house provided with a source of electrical energy and with agenerator, a normally open circuit connecting the source of electricalenergy and the boxes, a normally open circuit connecting the generatorand the signals and operating when closed to flash all the signals, anda relay in the first circuit for closing the second circuit, of means ateach box for closing the first circuit to actuate the relay in a mannerto cause the signals to indicate the number of the box pulled.

6. A signal system having, in combination, a plurality of patrol boxeseach provided with a lamp, a station house provided with a generator forlighting the lamps, an electrical circuit between the generator and thelamps, mechanism at each patrol box for closing said circuit to connectthe generator with the lamps to actuate them, a signal at the stationhouse, actuated by the establishment from the patrol box of theconnection between the generator and the lamps,

for, indicating the pulling of a box, a register at the station housefor registering the number of the box pulled and the time for pulling,and means at the station house, responsive to the establishment from thepatrol box of the connection between the generator and the lamps, foractuating the register.

'7. A signal system having, in combination, a plurality of patrol boxeseach provided with a lamp, a station house provided witha generator forlighting the lamps, an electrical circuit between the generator and thelamps, mechanism at each patrol box for closing said circuit to connectthe generator with the lamps to actuate them, a visual signal at thestation house, actuated by the establishment from the patrol box of theconnection between the generator and the lamps, for indicating thepulling of a box, a register at the station house for registering thenumber of the box pulled and the time of pulling, means at the stationhouse, responsive to the establishment from the patrol box of theconnection between the generator and the lamps, for operating theregister, an audible signal at the station house for sounding the numberof the box pulled, and means at the station house, responsive to theactuation ,of the means for operating the register, for operating theaudible signal.

8. A signal system having, in combination, a plurality of patrol boxeseach numbered differently and each provided with a visual signal forindicating the number of box pulled, a station house provided with asource of electrical energy for operating the visual signals, anelectrical circuit between the source of electrical energy and thevisual signals, mechanism at each patrol box for closing said circuit toconnect all the visual signals with the source of electrical energy, aregister at the station house for registering the numberof the boxpulled, and means at the staoperating the register.

9. A signal system having, in combination, a, plurality of patrol boxeseach numbered differently and each provided with a visual signal forindicating the number of. the box pulled, a station house provided witha source of electrical energy for operating the visual signals, anelectrical circuit between the source of electrical energy and thevisual signals, mechanism at each patrol box for closing said circuit toconnect all the visual signals with the source of electrical energy, aregister at the station house for registering the number of the boxpulled and the time of pulling, and means at the station house, actuatedby the establishment from a patrol box of the connection between thevisual signals and the source of electrical energy, for operating theregister.

' 10. In a signal system, the combination with a plurality of patrolboxes each provided with a signal lamp, a station house normally opencircuit connecting the house and the boxes, a normally open circuitconnecting the house and the signal lamps and operating when closed toflash the lamps, and a relay in the first circuit for closing the secondcircuit, of means for closing the first circuit from at least one of theboxes to actuate the relay.

11. In a signal system, the combination with a plurality of patrolboxes, each provided with a signal lamp, and a station house providedwith a source of electrical energy, of means for conmeeting from eitherthe house or one of the boxes the source of electrical energy with allthe signal lamps to light them.

12. In a signal system, the combination with a plurality of patrolboxes, each numbered differently and each provided with a signal with asource of electrical energy and with a generator, a normally opencircuit connecting the source of electrical energy and the boxes, anormally open circuit connecting the generator and the signal lamps, andoperating when closed to I flash all the lamps, and a relay in the firstcircuit for closing the second circuit, of means at each box for closingthe first circuit to actuate the relay in a manner to cause all thesignal lamps to indicate the number of the box pulled.

13. A signal system having, in combination, a plurality of patrol boxeseach provided with a visual signal, a station house provided with asource of electrical energy, a generator, and a box call indicatingmeans, a normally open circuit connecting the source of electricalenergy and the boxes, a relay in 'said circuit, means at one of theboxes, operable when the box is open, for closing the circuit to actuatethe relay, a normally open circuit, of which the box call indicatingmeans forms a part, closed by the actuation of the relay to actuate thecall indicating means, a normally open circuit connecting the generatorwith the signal lamps, a second normally open circuit connecting thesource of electrical energy with the boxes, means at said one of theboxes, operable when the box is closed, for closing the last namedcircuit, and relays in parallel in said last named circuit, forrespectively closing the first named circuit to actuate the relaytherein and closing the circuit connecting the generator with the signallamps to light them.

14. In a signal system, the combination with a plurality of patrolboxes, each provided with a lamp, a station house provided with a sourceof electrical energy and with a generator, a normally open, circuitconnecting the source of electrical energy and the boxes, a normallyopen circuit connecting the generator and the lamps and operating whenclosed to light the lamps, a signal at the station house actuated by theclosing of the second circuit for indicating the operation of the lamps,and a relay in the first circuit for closing the second circuit, ofmeans at each box for closing the first circuit to actuate the relay.

15. In a signal system, the combination with a plurality of patrolboxes, each provided with .a lamp, a station house electricallyconnected to the boxes, and means for lighting all the lamps from atleast one of the boxes, of means for lighting all the lamps from thehouse.

16. In a signal system, the combination with a patrol box providedwith'a signal, a station house provided with a source of electricalenergy, a generator, and a signal, a normally open circuit of which thepatrol box and the source of electrical energy form a part, a secondnormally open circuit of which the signals, the generator, and a circuitclosing switch at the station house form a part, said second circuitoperating when closed to actuate the signals, and a relay in the firstcircuit for closing the second circuit independntly oi the house switch,of means at the box including a coding device for closing the firstcircuit to actuate the relay.

1'7. In a signal system, the combination with a patrol box, a stationhouse, means at the box for establishing a connection from the box tothe house, a visual signal at the box, means at the house forestablishing a connection from the house to the box, of means responsiveto the establishment of either of said connections for actuating thevisual signal.

18. A signal system having, in combination, a

' patrol box adapted to be opened and closed, a

station house provided with a box call indicating means, a normally opencircuit, including a relay, connecting the box and the house, means atthe box, operable when the box is open, for closing the first circuit toactuate the relay, a normally open circuit, of which the call indicatingmeans forms a part, closed by the actuation of the relay to actuate thecall indication means, a second normally open circuit connecting the boxand the house, and means at the box for closing the last named circuitoperating upon a closing of said circuit to close the first namedcircuit.

19. In a signal system, the combination with a patrol box adapted to beopened and closed and provided with a telephone set, a station houseprovided with a telephone set, a normally open circuit connecting thebox and the house, and a switch operated by the opening of the box toclose the .circuit and place thetelephone sets therein, or a circuit forproducing a sound in,the box telephone receiver when it is on its hookand the door is open, said circuit including a key at the house, asource of electrical energy, an induction coil having its secondarywinding connected to the first named circuit, and means controlled bythe key and connected to the primary winding of the induction coil forinducing alternating current in said secondary winding,

20. A signal system having, in combination, a plurality of patrol boxeseach numbered difierently and each provided with a visual signal forindicating the number of the box pulled, a station house provided with asource of electrical energy, a relay for operating all the visualsignals, mechanism at each patrol box for connecting the source ofelectrical energy with the signal operating relay to actuate it, meansat the station house for registering the number of the box pulled, and aprint relay in parallel with the signal operating relay and responsiveto the actuation thereof for causing the registering means to operate.

21. A signal system having, in combination, a plurality of patrol boxeseach provided with a lamp, a station house provided with a source ofelectrical energy and with a generator, a relay for flashing the lampsat the patrol boxes, mechanism at each patrol box for connecting thesource of electrical energy and the generator with the flashing relay toactuate it, a signal at the station house, responsive to the actuationof the flashing relay, for indicating the pulling of a box, a printrelay at the station house in parallel with the flashing relay andresponsive to the actuation thereof, a register at the station house forregistering the number of the box pulled and the time of pulling, and arelay responsive to the actuation of the print relay for operating theregister.

22. A signal system having, in combination, a plurality of patrol boxeseach provided with a lamp, a station house provided with a source ofelectrical energy and with a generator, a relay for flashing the lampsat the patrol boxes, mechanism at each patrol box for connecting thesource of electrical energy and the generator with the flashing relay toactuate it, a visual signal at the station house, responsivev to theactuation of the flashing relay, for indicating the pulling of a box, aprint relay at the station house in parallel with the flashing relay andresponsive to the actuation thereof, a register at the station house forregistering the number of the box pulled and the time of pulling, arelay responsive to the actuation of the print relay for operating theregister, an audible signal at the station house for sounding the numberof the box pulled, and a release relay responsive to the actuation ofthe last named relay for sounding the audible signal.

JOSEPHINE HAYES GREENE, Administratria: of the Estate of Timothy, A. J.

Hayes, Deceased.

